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Finding the Fourth Proportional to 682,740.80, 942,162.72 and 380,928.32

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Solution

The fourth proportional to 682,740.80, 942,162.72 and 380,928.32 is: 525,670.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,740.80 : 942,162.72 = 380,928.32 : x
  2. Step 2: Convert to fraction form
    682,740.80/942,162.72 = 380,928.32/x
  3. Step 3: Cross multiply
    682,740.80x = 942,162.72 × 380,928.32
  4. Step 4: Simplify right side
    682,740.80x = 358,896,462,096.23
  5. Step 5: Solve for x
    x = 358,896,462,096.23/682,740.80
  6. Step 6: Final answer
    x = 525,670.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.